Question

CWJ. FIUuem Previous Problem List Next (1 point) To let the efficacy of a new cholesterol towering medication 10 people are selected at random Each has their LDL levels measured (shown below as Before then take the medicine for 10 weeks, and men has their LDL levels measured again (Aller) Subject Before After 106 181 2 142 124 133 117 4 119 85 5 175 169 6 191 203 7 200 161 151 165 171 120 153 95 Gne a 90% confidence interval for the difference between LOL levels before and wher taking the medication Condence interval (6.5178 21 9176) Preview My Answers Submit Answers You have attempted this problem 6 times Your overall recorded score is 0% You have med attempts remaining Email instructor WWK1609 m ww.ver 212 von 2. The Worect

Answer 1

Paired t- test Hemd=ays Hild to The want to test statistics _ H = 101 Levels measured before s Yi - LDL levels mewused agedo (After I di - Hi-ger Test statistics is given by L 5 JE Ed (-131) = -13.7 An-1=ga Esdint 10 n- OG 196 1142. 1139 -34 didis -15 225 <! -18 9 24. -16 256 1156 -6_ 36__ 12.194 -39_ 152 -2 124 117 85 .169 203 161 151 175 191 200 15.3 | 165 | 120 _171 36 95 _ -25 1625 4327 137 4327 - 10 (-13. 72 4327 - 1976.9 5" - 272.2333 T5 = 16:49947

Date / trol SIN tq5-13.7) -131 16.4994 3.1622 16.4994- JO - - 13.2 ..5.2176 to 3-2.6257 Cuteulated value En-1) 42 = 29;0.025 b 2=5%) t9; 0-05 = 7g;0.025_= 2.26216 I Here taa-2.62517 t 970.020 = 2.26216__ L Here Italy to 20.025. Therefore we reject Ho at 5% level of significance Conclusion: The given dater support of the claim on the average stillbocas difference IDL level is not equced te sume 1 90% Confidence intervat se #17 - to-liste - J + En-Lisa Food H 4-13.7) - 2.26216 X 16.4994 1–13.7) + 2.26216) Vh - X_16.4994 1

Page 1 Date - 13,7 - 11:8082 -7-13.7 + 11.803 2 I(-25.5022 - 1,8968) 190 %. C.I is given by (-25.5032, -118964)